If you have room to experiment with placement, and prioritize one seat, I’d buy the Rythmik. There’s a case to be made for multiple subs, and I’m definitely an advocate of that. However the main advantage of multiple is smoothing the response, over multiple seats. And if you’re mainly focused on one seat, I advocate for the single best sub you can afford. It seems like the f12 is that sub for you. I don’t like sealed subs. But of these two, my money goes to Rythmik. Svs does offer free shipping and a nice upgrade path, but that experience is built in to the price, and unfortunately also affects customers that never even use their CS. Svs has legendary CS, but nothing is free. The app can be handy though. FWIW, I own svs subs, used and like both. Just like Rythmik better.
